Finding the Fourth Proportional to 723,010,552.72, 997,684,844.34 and 405,483,689.32

Step by Step Solution

1. Step 1: Write the proportion equation
   723,010,552.72 : 997,684,844.34 = 405,483,689.32 : x
2. Step 2: Convert to fraction form
   723,010,552.72/997,684,844.34 = 405,483,689.32/x
3. Step 3: Cross multiply
   723,010,552.72x = 997,684,844.34 × 405,483,689.32
4. Step 4: Simplify right side
   723,010,552.72x = 404,544,931,461,633,152
5. Step 5: Solve for x
   x = 404,544,931,461,633,152/723,010,552.72
6. Step 6: Final answer
   x = 559,528,391.31